/*
This file is part of IRCaBot.
IRCaBot is IRC logger with features.
Source code: https://notabug.org/acetone/ircabot.
Copyright (C) 2023, acetone.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

#include "ircnetworkclient.h"
#include "currenttime.h"
#include "adminircpanel.h"

#include <QDateTime>
#include <QStringList>
#include <QDebug>

#define LOG_WARN qWarning().noquote() << "[" + m_config->networkName + "]"
#define LOG_INFO qInfo().noquote() << "[" + m_config->networkName + "]"

IRCNetworkClient::IRCNetworkClient(QObject *parent) : QObject(parent) {}

void IRCNetworkClient::reloadChannelList()
{
    QStringList connectedChannelsTotalList;

    // PART
    QStringList channelsToPart;
    QListIterator<libircclient::Channel*> connectedChannelListIterator(m_network->GetChannels());
    while (connectedChannelListIterator.hasNext())
    {
        auto connectedChan = connectedChannelListIterator.next();
        if (not m_config->channels.contains(connectedChan->GetName()))
        {
            channelsToPart.push_back(connectedChan->GetName());
        }
        connectedChannelsTotalList.push_back(connectedChan->GetName());
    }

    QStringListIterator channelsToPartIter (channelsToPart);
    while (channelsToPartIter.hasNext())
    {
        const auto chanName = channelsToPartIter.next();
        m_network->RequestPart(chanName);
        QThread::msleep(500);
    }

    // JOIN
    QStringList channelsToJoin;
    QStringListIterator newChannelListIter (m_config->channels);
    while (newChannelListIter.hasNext())
    {
        auto newChannel = newChannelListIter.next();
        if (not connectedChannelsTotalList.contains(newChannel))
        {
            channelsToJoin.push_back(newChannel);
        }
    }

    QStringListIterator channelsToJoinIter (channelsToJoin);
    while (channelsToJoinIter.hasNext())
    {
        const auto chanName = channelsToJoinIter.next();
        m_network->RequestJoin(chanName);
        QThread::msleep(500);
    }
}

void IRCNetworkClient::start()
{
    libirc::ServerAddress address(m_config->host);
    address.SetPort(m_config->port);
    address.SetSSL(m_config->ssl);
    address.SetNick(m_config->nickname);
    address.SetPassword(m_config->password);
    address.SetIdent(m_config->ident);
    address.SetRealname(m_config->realName);
    address.SetSuffix(m_config->channels.join(','));

    m_network = new libircclient::Network(address, m_config->networkName);
    m_network->SetDefaultIdentifyString(m_config->identifyFormat);
    m_network->Connect();

    connect(m_network, &libircclient::Network::Event_WhoisRegNick, this, &IRCNetworkClient::Slot_adminIdentified);
    connect(m_network, &libircclient::Network::Event_PRIVMSG, this, &IRCNetworkClient::Slot_privMsg);
}

void IRCNetworkClient::Slot_privMsg(libircclient::Parser *p)
{
    const QString receiver = p->GetParameterLine();
    const QString sender = p->GetSourceUserInfo()->GetNick();
    const QString text = p->GetText();

    if (receiver == m_network->GetLocalUserInfo()->GetNick())
    {
        emit Event_NewDirectMessage(sender, text);
    }
    else
    {
        emit Event_NewChannelMessage(receiver, sender, text);
    }
}

void IRCNetworkClient::Slot_adminIdentified(libircclient::Parser* p)
{
    auto params = p->GetParameters();
    if (params.size() < 2)
    {
        LOG_WARN << "Event_WhoisRegNick failure: params.size() < 2, expected 2";
        return;
    }
    if (p->GetParameters().at(1) != m_config->ircabotAdmin)
    {
        LOG_WARN << "Event_WhoisRegNick failure: requested, but admin changed";
        return;
    }

    LOG_INFO << "Admin authorized:" << m_config->ircabotAdmin;
    AdminIRCPanel::identifiedTimestampUpdate(m_network->GetNetworkName());
    m_network->SendMessage(m_config->ircabotAdmin, "You have been identified as an IRCaBot administrator. "
                                                  "Timeout: " + QString::number(Config::ircAdminAuthorizationTimeout()) + " secs");
}

void IRCNetworkClient::Slot_onDirectMessage(QString sender, QString text)
{
    if (sender != m_config->ircabotAdmin) return;

    QStringList answer;
    if (not AdminIRCPanel::parse(m_network->GetNetworkName(), text, answer))
    {
        m_network->RequestWhois(sender, libircclient::Priority_Low);
    }

    LOG_INFO << "Admin is doing something...";

    QStringListIterator answerIter (answer);
    while (answerIter.hasNext())
    {
        m_network->SendMessage(sender, answerIter.next(), libircclient::Priority_RealTime);
        if (answerIter.hasNext()) QThread::msleep(100);
    }
}

void IRCNetworkClient::Slot_onChannelMessage(QString channel, QString sender, QString text)
{

}